#B73B3F#B73B3F

#B73B3F is a mid, vivid red. Relative luminance 0.136; OKLCH L 53.3% C 0.160 H 22.6°. Best body text is #FFFFFF at 5.66:1 contrast (WCAG AA passes).

Color values

HEX	#B73B3F
RGB	rgb(183, 59, 63)
HSL	hsl(358, 51%, 47%)
HSV	hsv(358, 68%, 72%)
CMYK	cmyk(0%, 67.8%, 65.6%, 28.2%)
CIE-LAB	lab(43.59, 50.10, 25.96)
CIE-LCH	lch(43.59, 56.43, 27.40°)
OKLab	oklab(53.31% 0.1475 0.0615)
OKLCH	oklch(53.31% 0.16 22.6)
XYZ	xyz(21.9919, 13.5572, 6.1604)
Luminance	0.1355 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B73B3F #3BB7B3

analogous

#B73B7D #B73B3F #B7753B

triadic

#B73B3F #3FB73B #3B3FB7

tetradic

#B73B3F #7DB73B #3BB7B3 #753BB7

square

#B73B3F #7DB73B #3BB7B3 #753BB7

split-complementary

#B73B3F #3BB775 #3B7DB7

monochromatic

#5A1D1F #892C2F #B73B3F #CD6366 #DC9193

Accessibility & contrast

On white

5.66

#B73B3F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.71

#B73B3F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B73B3F

5.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B73B3F	#FFFFFF	#000000	##FFFFFF
##B73B3F	1.00	5.66	3.71	5.66
#FFFFFF	5.66	1.00	21.00	1.00
#000000	3.71	21.00	1.00	21.00
##FFFFFF	5.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C563E

Deuteranopia (green-blind)

#7C713B

Tritanopia (blue-blind)

#C91B3E

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #b73b3f;
/* rgb */ color: rgb(183, 59, 63);
/* oklch */ color: oklch(53.3% 0.160 22.6);

Tailwind

colors: {
  custom: {
    50: '#d47874',
    500: '#b73b3f',
    950: '#000000',
  },
}

SCSS

$custom: #b73b3f;
$custom-light: #d47874;
$custom-dark: #000000;

JSON

{
  "hex": "#b73b3f",
  "rgb": {
    "r": 183,
    "g": 59,
    "b": 63
  },
  "hsl": {
    "h": 358.065,
    "s": 51.24,
    "l": 47.451
  },
  "oklch": {
    "l": 0.53306,
    "c": 0.1598,
    "h": 22.6
  },
  "luminance": 0.13554
}

Semantic roles & 50–950 ramp

primary

#B73B3F

secondary

#87C6C4

accent

#DBD64D

background

#FDF7F7

surface

#FBEEED

border

#D4C9C8

text

#150908

muted

#837B7B

Preview Lab

Preview with #B73B3F

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →